EP2948255A1 - Pumpen mit behälterluftlöchern - Google Patents
Pumpen mit behälterluftlöchernInfo
- Publication number
- EP2948255A1 EP2948255A1 EP14702730.4A EP14702730A EP2948255A1 EP 2948255 A1 EP2948255 A1 EP 2948255A1 EP 14702730 A EP14702730 A EP 14702730A EP 2948255 A1 EP2948255 A1 EP 2948255A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- liquid
- pump
- air
- refill unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims abstract description 126
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 13
- 239000006260 foam Substances 0.000 description 28
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000013022 venting Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005187 foaming Methods 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/38—Details of the container body
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K5/00—Holders or dispensers for soap, toothpaste, or the like
- A47K5/14—Foam or lather making devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0037—Containers
- B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
- B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0037—Containers
- B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
- B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
- B05B11/00442—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means the means being actuated by the difference between the atmospheric pressure and the pressure inside the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1015—Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1087—Combination of liquid and air pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
- B05B7/0025—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K5/00—Holders or dispensers for soap, toothpaste, or the like
- A47K5/06—Dispensers for soap
- A47K5/12—Dispensers for soap for liquid or pasty soap
- A47K5/1217—Electrical control means for the dispensing mechanism
Definitions
- the present invention relates generally to pumps, refill units for dispensers, and dispensers, and more particularly to pumps, refill units and dispensers that have a non- collapsible container that requires venting.
- Liquid dispenser systems such as liquid soap and sanitizer dispensers, provide a user with a predetermined amount of liquid upon actuation of the dispenser.
- Many dispensers are refillable with refill units that comprise a pump (or a pump and an air compressor) and a container.
- Many of the refill units currently on the market are inverted.
- the pump is located under the container when installed in the dispenser and the containers are often "collapsible" containers. That is, as liquid is pumped out of the container, a vacuum is created in the container and the vacuum pressure collapses the container because air does not flow into the container to replace the liquid.
- Providing a vent in the bottom of the container subjects the container to potential leakage problems.
- Exemplary embodiments of pumps, refill units and dispensers are disclosed herein.
- Some embodiments include a container for holding a fluid and a pump housing secured to the container.
- the pump housing includes an annular collar for securing the pump housing to the container.
- the pump housing also includes an air chamber and a vent valve located at least partially within the air chamber.
- One or more air passageways are provided in the collar for providing air to the air chamber.
- a compressible liquid pump chamber is also located in the housing.
- the exemplary embodiment includes a liquid inlet valve for allowing liquid to flow from the container into the compressible pump chamber and a liquid outlet valve located downstream of the pump chamber.
- Another exemplary refill unit includes a container for holding a fluid and a pump housing secure to the container.
- the pump housing has an annular collar for securing the pump housing to the container.
- a seat member is located at least partially within the annular collar.
- An air chamber is located within the pump housing below the seat member.
- One or more air passageways are in the collar for providing air to the air chamber.
- a vent valve is secured to the seat member for controlling the flow of air from the air chamber into the container.
- a compressible liquid pump chamber is also located in the housing.
- a liquid inlet valve is secured to the seat member for allowing liquid to flow from the container into the compressible pump chamber, and a liquid outlet valve is located downstream of the pump chamber.
- Another exemplary refill unit includes a container for holding a liquid.
- a housing is secured to the container.
- the housing includes an opening with a sleeve located in the opening.
- a piston is provided that is movable within the sleeve.
- the piston includes a sealing member.
- the housing includes first aperture through a wall of the opening. The first aperture places an area between the sleeve and the opening in fluid communication with the interior of the container.
- a second aperture through a wall of the sleeve is provided. The second aperture is located so that the second aperture is closed off by the sealing member when the piston is in a first position. When the piston is in a second position, the second aperture is in fluid communication with the atmosphere.
- Another exemplary refill unit includes a container and a pump housing secured to the container.
- the pump housing includes a substantially cylindrical valve cavity and a substantially cylindrical pump cavity.
- a sleeve is located at least partially within the pump cavity.
- An aperture places the valve cavity in fluid communication with the pump cavity.
- a piston is provided, and the piston is movable horizontally within the sleeve.
- An inlet valve and an outlet valve are stacked on each other and are offset from the neck of the container.
- Exemplary pumps are also disclosed herein, and the exemplary embodiments of refill units described above include the exemplary embodiments of the pumps. Similarly, the above described refill units may be used in dispensers.
- Figure 1 is a cross-section of an exemplary foam dispenser having a refill unit with a non-collapsible container
- Figure 2 is a cross-section of an exemplary refill unit with a pump and a container vent;
- Figure 3 is a cross-section of an exemplary refill unit with a pump having a simplified inlet and outlet valve and a container vent;
- Figure 4 illustrates another cross-section of an exemplary refill unit with a pump having a simplified inlet and outlet valve and a container vent.
- FIG. 1 illustrates an exemplary embodiment of a foam dispenser 100.
- the cross- section of Figure 1 is taken through the housing 102 to show the foam pump 120 and container 116.
- Foam dispenser 100 includes a disposable refill unit 110.
- the disposable refill unit 1 10 includes a non-collapsible container 116 connected to foam pump 120.
- the foam dispenser 100 may be a wall-mounted system, a counter-mounted system, an unmounted portable system movable from place to place or any other kind of foam dispenser system.
- Some of the exemplary embodiments described herein have foam pumps; that is, they contain a liquid pump and an air compressor. However, the inventive venting system described herein works equally well with a liquid pump that does not include an air compressor.
- the container 116 forms a liquid reservoir that contains a supply of a foamable liquid within the disposable refill unit 110.
- the contained liquid could be for example a soap, a sanitizer, a cleanser, a disinfectant or some other liquid that may be foamable or not foamable (in the case of a liquid only pump).
- the container 116 is a non-collapsible container and can be made of thin plastic or like material.
- the container 1 16 may be formed by a rigid housing member, or have any other suitable configuration for containing the foamable liquid without leaking.
- the container 116 may advantageously be refillable, replaceable or both refillable and replaceable.
- the installed refill unit 110 may be removed from the foam dispenser 100.
- the empty or failed disposable refill unit 110 may then be replaced with a new disposable refill unit 110.
- the housing 102 of the foam dispenser 100 only extends part way around the container 116 thereby exposing at least a portion of the container 1 16. In such an embodiment, having a container that does not collapse as liquid is pumped out is aesthetically pleasing.
- the housing 102 of the foam dispenser 100 contains one or more actuating members 104 to activate the pump 120.
- actuator or actuating members or mechanism includes one or more parts that cause the dispenser 100 to move liquid, air or foam.
- Actuator 104 is generically illustrated because there are many different kinds of pump actuators which may be employed in the foam dispenser 100.
- the actuator of the foam dispenser 100 may be any type of actuator such as, for example, a manual lever, a manual pull bar, a manual push bar, a manual rotatable crank, an electrically-activated actuator or other means for actuating the foam pump 120 which includes a liquid pump portion 124 and air compressor portion 122.
- Electronic actuators may additionally include a sensor (not shown) to provide for a hands-free dispenser system with touchless operation.
- actuator 104 is connected to housing 102 by a hinge member 106.
- Various intermediate linkages, such as for example linkage 105 connect the actuator member 104 to the foam pump 120 within the system housing 102.
- linkage 105 has a socket 107 that snaps onto a ball 245 (Fig. 2) at the proximate end of piston 240.
- An aperture 115 in bottom plate 103 of housing 102 allows foam dispensed from the nozzle 125 of foam pump 120 to be dispensed to a user.
- FIG. 2 is a cross-sectional view of an exemplary embodiment of a refill unit 200 suitable for use in foam dispensers.
- Refill unit 200 includes a non-collapsible container 221 for holding a foamable liquid connected to a foam pump 201.
- Foam pump 201 includes a housing 202. Housing 202 receives seat member 216.
- Seat member 216 includes an annular projection 218.
- a neck of a container 221 is received within an annular groove 222 formed between annular projection 218 and housing 202.
- Housing 202 may be connected to the container 221 by any means such as, for example, a snap- fit connection, a threaded connection, a welded connection, an adhesive connection or the like.
- Seat member 216 includes one or more liquid inlet apertures 224 located therethrough.
- seat member 216 includes an inlet valve retaining aperture and one-way inlet valve 226 is secured to seat member 216 therethrough.
- One-way liquid inlet valve 226 may be any type of one-way valve such as, for example, a ball and spring valve, a poppet valve, a flapper valve, an umbrella valve, a slit valve, a mushroom valve, a duck-bill valve or the like.
- seat member 216 includes an air inlet aperture 292 and one-way air inlet valve 294.
- One-way air inlet valve 294 includes one or more air inlet apertures 296.
- Housing 202 includes an annular projection 299 that engages with a second annular projection 227 of seat member 216 to form a liquid passageway on the inside of first annular projection 299 and second annular projection 227. Located outside of the first annular projection 299 and second annular projection 227 is an air chamber 298.
- Housing 202 includes one or more small channels 290 between the neck of the container 221 and housing 202 that form an air passageway to provide air from the outside atmosphere to the air chamber 298.
- a vacuum is created inside the container 221. Once the vacuum pressure rises above the cracking pressure of the air inlet valve 294, air from air chamber 298 is drawn into container 221 to relieve the vacuum pressure. Liquid is prevented from leaking out of container 221 by one-way air inlet valve 294.
- the channels 290 in housing 202 that form the air passage are very small and if a small amount of liquid enters air chamber 298 it is trapped in the air chamber 298 and will not leak through the channels 290.
- seat member 216 includes a deflector member (not shown) between liquid inlet valve 226 and air inlet valve 294 to prevent air from being sucked into the liquid inlet
- Pump housing 202 includes a liquid chamber 204.
- liquid chamber 204 is cylindrical.
- a sleeve 232 Located at least partially within liquid chamber 204 is a sleeve 232.
- Housing 202 includes an annular projection 210 at one end of the liquid chamber 204.
- Sleeve 232 is secured to annular projecting member 210 by collar 211.
- Collar 211 includes an aperture 212.
- a piston 240 includes a shaft 241 that projects through aperture 212. Piston 240 is slideable in a reciprocating manner within sleeve 232. Piston 240 includes a piston head having a double wiper seal 244 located at the distal end. Movement of piston 240 causes the volume of liquid chamber 204 to expand and contract. Double wiper seal 244 may be any type of sealing member such as, for example, an o-ring, a single wiper seal or the like. Housing 202 includes a projecting member 206 that contacts an end 207 of piston 240 to stop movement of piston 240 when it reaches the end of its stroke.
- piston 240 includes a second piston head and sealing member 242 located at the proximal end of piston 240. Second sealing member 242 engages the inside of the air compressor housing 230.
- air compressor may be used interchangeably herein with the term “air pump.”
- air compressor housing 230 and sleeve 232 are formed as one piece. Movement of piston 240 causes air chamber 243 to expand and contract. Air chamber 243 includes an air outlet 236, which is also an air inlet to mixing chamber 262. In one embodiment, air outlet 236 is integrally formed with both sleeve 232 and air compressor housing 230.
- a liquid inlet passageway 250 is formed between sleeve 232 and the wall of liquid chamber 204.
- the liquid inlet passageway 250 may extend entirely around sleeve 232 or may be enclosed by one or more rib projections (not shown) that cause liquid in inlet passageway 250 to flow through passage 250 and passage 252 into the interior of sleeve 232.
- Outlet passages 254, 256 also exist between sleeve 232 and the walls of liquid chamber 204.
- Outlet passageway 256 may extend entirely around sleeve 232 or may be enclosed by one or more rib projections (not shown) that cause liquid to flow from the interior of sleeve 232 through passageways 254, 256.
- Passageway 254 and passageway 250 may be connected to form a common passageway.
- Housing 202 includes an outlet passage 208.
- Lower housing 260 may be connected to housing 202 by any means such as, for example, a threaded connection, a snap-fit connection, a welded connection an adhesive connection or the like.
- lower housing 260 includes annular projection 267 that snaps onto annular projection 209 of housing 202.
- Located proximate outlet passage 208 is a liquid outlet valve 264.
- Liquid outlet valve 264 includes a slit 266. Slit 266 opens to allow liquid to flow from liquid chamber 204 into mixing chamber 262.
- liquid outlet valve 264 is retained in place by annular rim 263 on lower housing member 260. While a slit valve is shown and advantageously takes up very little room, other types of liquid outlet valves may be used such as, for example, a ball and spring valve, a flapper valve, a poppet valve, a mushroom valve, a duck-bill valve or the like.
- Lower housing 260 has an interior cavity that forms a mixing chamber 262.
- Lower housing 260 includes an opening 273 in the wall of mixing chamber 262.
- the air outlet 236 of air chamber 243 is fitted into opening 273 to allow mixing chamber 262 to be in fluid communication with air chamber 243.
- Mixing chamber 262 is in fluid communication with liquid chamber 204 through valve 264.
- lower housing 260 includes an outlet opening 261 and a lower annular projection 269.
- Outlet nozzle 270 fits over lower projection 269 to secure outlet nozzle 270 to lower housing 260.
- Outlet nozzle 270 is secured using a press-fit connection, but may be connected by other means such as, for example, a snap-fit connection, an adhesive, a threaded connection or the like.
- Outlet nozzle 270 includes a base 271, a tapered portion 272 and an outlet 274.
- a foaming media 275 such as one or more screens, is included in outlet nozzle 270.
- a foaming cartridge may be used whereby the foaming cartridge rests on base 271.
- screens 275 are replaced by one or more porous members or baffles.
- liquid inlet 224, or liquid inlet valve 226 may be positioned over any portion of the sleeve 232 without affecting the volume of liquid chamber 204 or reducing the efficiency of pump 201.
- the liquid outlet 208 and/or liquid outlet valve 264 may be located along any portion of the sleeve 232 without reducing the volume of liquid chamber 204 or reducing the efficiency of pump 201.
- the liquid inlet and the liquid outlet are off-set from each other.
- the liquid outlet is located closer to the front of the dispenser than the liquid inlet when the pump 201 is installed in the foam dispenser.
- the liquid inlet and liquid outlet are along a common axis.
- the piston 240 may move along a pump axis that is substantially horizontal.
- the liquid inlet valve 226 moves along an axis that is substantially normal to the pump axis.
- at least a portion of the liquid inlet valve 226 moves along a substantially vertical axis even though it may collapse both horizontally and vertically.
- pump 201 has been described as being made of selected sub-parts, pump 201, as well as the other embodiments of pumps disclosed herein, may be made from more sub-parts or fewer sub-parts.
- Movement of piston 240 from the charged position to the discharged position causes fluid to flow out of the liquid chamber 204 (including the center of the sleeve 232) through passages 254, 256, past liquid outlet valve 264 and into mixing chamber 262. Simultaneously, the volume of air chamber 243 is reduced and air flows out of air outlet 236 into mixing chamber 262. The air and liquid mixture is forced through opening 261 and through foam media 275 to create a rich foam. The rich foam travels through tapered section 272 where it accelerates due to the reduced volume and exits foam pump 201 through outlet 274.
- the air compressors and liquid pumps described herein may include biasing members to return them to a charged or primed state.
- a biasing member in the actuator mechanism returns the air compressor and/or liquid pump to a first state. Still yet, if the air compressor and/or liquid pump are electrically operated, they may be moved to the first state electronically.
- the foam pump 201 is replaced, with a liquid pump that does not include an air compressor.
- FIG. 3 is a cross-sectional view of an exemplary embodiment of a refill unit 300 suitable for use in a dispensers.
- Refill unit 300 includes a non-collapsible container 321 for holding a liquid connected to a pump 301.
- Pump 301 includes a housing 302.
- Housing 302 includes an annular collar 307 and an interior annular projection 318 that forms an annular groove 322 for receiving the neck of container 321.
- Housing 302 may be connected to the container 321 by any means such as, for example, a snap-fit connection, a threaded connection, a welded connection, an adhesive connection or the like.
- Housing 302 includes a base 309.
- Base 309 includes a liquid inlet aperture 324 that leads into a valve cavity 325, placing the valve cavity 325 in fluid communication with container 321.
- Valve cavity 325 is formed in part by wall 306.
- annular projection 308 Located within valve cavity 325 is an annular projection 308 that serves to retain valve stem 336.
- Valve stem 336 is part of lower housing 330.
- Lower housing 330 includes an annular projection 333 to secure to the wall 306 of housing 302.
- Lower housing 330 may be secured to housing 302 by any means, such as, for example, a snap-fit connection, a threaded connection, an adhesive connection, a welded connection or the like.
- Lower housing 330 also includes an outlet 334 for dispensing a fluid.
- Valve stem 336 supports inlet valve 342 and outlet valve 339 which are stacked on top of each other. Located in a wall of valve cavity 325, in between the inlet valve 342 and the outlet valve 339 is an aperture 305. Aperture 305 places the valve cavity 325 in fluid communication with pump chamber 304. Inlet valve 342 and outlet valve 339 are one-way valves and allow liquid to pass in one direction. The valves are simple wiper valves and are interchangeable with each other.
- Pump housing 302 includes a pump chamber 304.
- pump chamber 304 is cylindrical.
- a sleeve 332 Located at least partially within pump chamber 304 is a sleeve 332.
- Housing 302 includes an annular projection 310 at one end of the pump chamber 304.
- Sleeve 332 is secured to annular projecting member 310 by collar 311.
- the connection may be any type of connection, such as, for example, a snap-fit connection, a threaded connection, an adhesive connection, a welded connection or the like.
- Collar 311 includes an aperture 312.
- a piston 340 includes a shaft 341 that projects through aperture 312. Piston 340 is slideable in a reciprocating manner within sleeve 332. Piston 340 includes a piston head having a double wiper seal 344 located at the distal end. Movement of piston 340 causes the volume of pump chamber 304 to expand and contract. Double wiper seal 344 may be any type of sealing member such as, for example, an o-ring, a single wiper seal or the like.
- Sleeve 332 includes an aperture 392.
- Aperture 392 places the area between the sleeve 332 and the housing 302 in fluid communication with the atmosphere when the liquid piston is moved forward as illustrated in Figure 3.
- piston double wiper seal 344 closes off aperture 392 and seals aperture 392 from the atmosphere.
- Located around sleeve 332 is a sealing member 390. Sealing member 390 seals the area between sleeve 332 and housing 302 to prevent liquid from passing from the pump chamber 304 into the area that is periodically open to the atmosphere when the piston double wiper seal 344 is moved off of aperture 392.
- Base 309 of housing 302 includes an aperture 394, which may include an annular projection 395.
- a vent tube 396 is inserted into aperture 394 and projection 395.
- the top 397 of the vent tube 396 is located proximate the top 323 of container 321 allowing the air to vent the container without fluid traveling down the vent tube 396 into the area between the sleeve 332 and housing 302.
- piston 340 is moved outward to seal off aperture 392 during shipping.
- pump 301 has been described as being made of selected sub-parts, pump 301, as well as the other embodiments of pumps disclosed herein, may be made from more sub-parts or fewer sub-parts.
- pump 301 is used without the vent tube 396, aperture 394 and sealing member 390 and used with a collapsible container instead of a non-collapsible container.
- FIG 4 is another exemplary embodiment of a refill unit 400.
- Pump 401 is substantially similar to pump 301. The liquid pumping portion is so similar, the components are not renumbered with respect to Figure 4, and only the venting components are described with respect to Figure 4.
- Pump 401 includes a venting aperture 492 through a wall of sleeve 432.
- An aperture 494 is through base 406 of housing 402.
- An annular projecting member 495 projects up from base 406 around aperture 494.
- Additional air inlet apertures 494A may be included around aperture 494 if aperture 494 is used solely to anchor one-way air inlet valve 496 to base 406.
- air may flow through grooves (not shown) in the base of one-way air inlet valve 496 and through aperture 494.
- a sealing member 490 such as, for example, an o-ring provide an air passage between sleeve 432 and base 402 for air to flow to one-way air inlet valve 496.
- One-way air inlet valve 496 allows air to flow into container 421 once sufficient vacuum pressure builds within container 421 to overcome the cracking pressure of valve 496. Operation of pump 401 and the venting system is similar to the operation of the prior embodiments and will not be re-discussed herein.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Closures For Containers (AREA)
- Reciprocating Pumps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/747,909 US9038862B2 (en) | 2013-01-23 | 2013-01-23 | Pumps with container vents |
PCT/US2014/012440 WO2014116632A1 (en) | 2013-01-23 | 2014-01-22 | Pumps with container vents |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2948255A1 true EP2948255A1 (de) | 2015-12-02 |
EP2948255B1 EP2948255B1 (de) | 2019-01-16 |
Family
ID=50033847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14702730.4A Active EP2948255B1 (de) | 2013-01-23 | 2014-01-22 | Pumpen mit behälterluftlöchern |
Country Status (10)
Country | Link |
---|---|
US (2) | US9038862B2 (de) |
EP (1) | EP2948255B1 (de) |
JP (1) | JP2016506782A (de) |
CN (1) | CN104955583A (de) |
AU (1) | AU2014209540B2 (de) |
BR (1) | BR112015017250A2 (de) |
CA (1) | CA2898269C (de) |
MX (1) | MX2015009481A (de) |
TW (1) | TW201441142A (de) |
WO (1) | WO2014116632A1 (de) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140054323A1 (en) * | 2012-08-23 | 2014-02-27 | Gojo Industries, Inc. | Horizontal pumps, refill units and foam dispensers with integral air compressors |
WO2014201322A1 (en) * | 2013-06-14 | 2014-12-18 | Gojo Industries, Inc. | Foam cartridges, pumps, refill units and foam dispensers utilizing the same |
US9648992B2 (en) | 2013-12-19 | 2017-05-16 | Gojo Industries, Inc. | Pumps with vents to vent inverted containers and refill units having non-collapsing containers |
US10160590B2 (en) | 2014-02-24 | 2018-12-25 | Gojo Industries, Inc. | Vented non-collapsing containers, dispensers and refill units having vented non-collapsing containers |
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- 2014-01-22 JP JP2015553908A patent/JP2016506782A/ja active Pending
- 2014-01-22 EP EP14702730.4A patent/EP2948255B1/de active Active
- 2014-01-22 CA CA2898269A patent/CA2898269C/en active Active
- 2014-01-22 BR BR112015017250A patent/BR112015017250A2/pt not_active IP Right Cessation
- 2014-01-22 CN CN201480005761.4A patent/CN104955583A/zh active Pending
- 2014-01-22 WO PCT/US2014/012440 patent/WO2014116632A1/en active Application Filing
- 2014-01-22 MX MX2015009481A patent/MX2015009481A/es unknown
- 2014-01-23 TW TW103102486A patent/TW201441142A/zh unknown
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2015
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AU2014209540B2 (en) | 2018-07-05 |
CA2898269A1 (en) | 2014-07-31 |
CN104955583A (zh) | 2015-09-30 |
JP2016506782A (ja) | 2016-03-07 |
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US9038862B2 (en) | 2015-05-26 |
EP2948255B1 (de) | 2019-01-16 |
AU2014209540A1 (en) | 2015-09-10 |
CA2898269C (en) | 2021-08-10 |
BR112015017250A2 (pt) | 2017-07-11 |
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